2021 Open de Oeiras III – Singles

Singles
2021 Open de Oeiras III
Champion	Carlos Alcaraz
Runner-up	Facundo Bagnis
Score	6–4, 6–4

Main article: 2021 Open de Oeiras III

Pedro Cachin was the defending champion but chose to not defend his title.

Carlos Alcaraz won the title after defeating Facundo Bagnis 6–4, 6–4 in the final.

Seeds

1. Jiří Veselý (second round, retired)
2. Steve Johnson (first round)
3. Federico Coria (second round)
4. Pedro Martínez (second round)
5. Yannick Hanfmann (first round)
6. Juan Ignacio Londero (first round)
7. Facundo Bagnis (final)
8. Pedro Sousa (quarterfinals)

Draw

Key

• Q = Qualifier
• WC = Wild card
• LL = Lucky loser
• Alt = Alternate
• ITF = ITF entry
• PR = Protected ranking
• SR = Special ranking
• SE = Special exempt
• JE = Junior exempt
• JR = Junior Accelerator Programme entrant
• CO = College Accelerator Programme entrant
• NG = Next Gen Accelerator Program entrant
• w/o = Walkover
• r = Retired
• d = Defaulted

Finals

	Semifinals							Final
		Taro Daniel	2	7	2
		Carlos Alcaraz	6	5	6
									Carlos Alcaraz	6	6
								7	Facundo Bagnis	4	4
	7	Facundo Bagnis	6	6
		Hugo Gaston	0	2

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	J Veselý	6	77
	Q	H Grenier	4	62				1	J Veselý	3	3r
		S Ofner	1	64					H Dellien	6	4
		H Dellien	6	77												H Dellien	1	6	1
		B Rola	1	5												T Daniel	6	3	6
		T Daniel	6	7					T Daniel	6	6
		L Mayer	4	6	6				L Mayer	3	4
	6	JI Londero	6	1	4																		T Daniel	2	7	2
	3	F Coria	2	6	6																		C Alcaraz	6	5	6
	Q	A Molčan	6	4	1			3	F Coria	4	6	4
		M Cressy	63	4				WC	G Elias	6	4	6
	WC	G Elias	77	6											WC	G Elias	5	4
		C Alcaraz	6	6												C Alcaraz	7	6
		Y Uchiyama	0	3					C Alcaraz	3	6	6
		B Nakashima	6	6					B Nakashima	6	4	4
	5	Y Hanfmann	3	4

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	7	F Bagnis	7	3
		C Taberner	5	2r				7	F Bagnis	2	6	6
		J Jung	6	4	3			Alt	F Ferreira Silva	6	4	2
	Alt	F Ferreira Silva	1	6	6										7	F Bagnis	6	5	7
	WC	N Borges	6	6											WC	N Borges	1	7	5
		B Zapata Miralles	4	4				WC	N Borges	6	6
	WC	J Domingues	4	2				4	P Martínez	2	4
	4	P Martínez	6	6																		7	F Bagnis	6	6
	8	P Sousa	3	77	4																		H Gaston	0	2
		D Džumhur	6	64	0r			8	P Sousa	6	6
		D Kudla	4	6	5				B van de Zandschulp	3	2
		B van de Zandschulp	6	3	7										8	P Sousa	3	6	2
		H Gaston	77	6												H Gaston	6	1	6
	Q	Z Bergs	61	1					H Gaston	6	6
	Q	E Gómez	77	3	6			Q	E Gómez	4	3
	2	S Johnson	64	6	3

External links

• Main draw
• Qualifying draw